Automatic projecting-lantern.



J. QUIGLB AUTOMATIC PROJECTING APPLICATION FILED TE Patented Mar. 10, 191i 2 SHEETSSHEIIT 1.

COLUMBIA YLANOORAPH COHWASHINOTON D g J. QUIGLBY. AUTOMATIC PROJEGTING LANTERN.

APPLICATION FILED M13. 10, 1912.

1,089,788. Patented Mar. 10, 191 1 ATES PATENT UFFIQE.

JOSEPH QUIGLEY, OF DUNOON, SCOTLAND, ASSIGNOR T0 WILLIAM JAMES SEMPLE, 0F GLASGOW, SCOTLAND.

AUTOMATIC PROJECTING-LANTERN.

Specification of Letters Patent.

Application filed February 10. 1912.

Patented Mar. 10, 1914.

Serial No. 676,867.

The invention which relates to opticah lanterns consists of a lantern composed ot. a wood or metal body having clock work or an electric motor built into the under part for the mechanical movement of a revolving metal disk or carrier containing ten or more lantern slides, which rotates on a pivot fixed in an upright standard erected in front of the lantern. The under or mechanical part contains the motor which has a horizontal revolving disk attached to it, fitted with metal fingers, which, when in action move a disk or carrier containing the lantern slides step by step. This disk or carrier is supported and revolves on an upright standard immediately in front of the lantern. A spring controlling device is fitted to it so as to engage in a series of notches cut in the pivot flange which auto- .matically regulates the movement of one The upper part 1s the slide at a time. illuminant or lantern for projecting lantern slides in the usual way through the lens on to the necessary sheet or screen. The lantern part is fitted on the front with a flasher or shutter which automatically shuts off the light when the mechanism is in the act of revolving the vertical disk or carrier. and likewise opens up again to admit the light to the lens when a slide is in position for exposure. This operation is performed by a spring controlled sliding bar, two shutter blades and a lever, whose movements are controlled by the automatic action of the motor disk, which is recessed in two places for the purpose of opening and closing the shutter.

In order that my invention may be properly understood and readily carried into effect, I have hereunto appended two sheets of drawings, of which,

Figure 1 is a :front elevation of the automatic projecting lantern embodying my in vention. Fig. 2 is a part side elevation and part vertical section of the same. Fig. 3 is a back view of the lantern slide disk or carrier. Fig. 4 is a plan of the revolving disk engaging the lantern slide disk or carrier. V

Fig. 5 is a front elevation of the flasher or shutter, revolving disk. with lever operating mechanism, the full lines show the flasher or shutter closed and the dotted lines the flasher or shutter opened for the exposure of slide drawn to an enlarged scale. Fig. 6 is a detail oi. part of the operating mechanism. Fig. 7 is an enlarged detail view of an improved brake pawl for the carrier.

A is the lantern body, ll is the motor which may consist of clockwork. C is the spindle receiving its motion from said motor. Mounted upon the top of said spindle C is the revolving disk l3 whose upper surface is formed with the hollows l) and F cut at opposite points, as seen in Fig. -l-, the said revolving disk I) has also a pair of metal fingers or wings (i, the object of said hollows and fingers will he presently described. Mounted pivotally upon an up right bracket or standard II is the revolving metal disk or carrier I moving behind the projecting lens I The metal disk or carrier I aforesaid is "formed of metal and has ribs or webs J for strengthening and giving it the requisite regidity and stability, and also as shown in Fig. 3, is pro vided with pockets or :frames K for carrying the slides. L are lingers or projections one for each slide as seen, mounted in said metal disk or carrier I and these are engaged hy the fingers G on the revolving disk.

M is a disk of metal attached rigidly to the metal disk or carrier I aforesaid.

N is a spring operated-bent arm whose free end engages the notches as seen in dotted lines, Fig. 1. so as to brake the rotation of the metal disk and he the means of preventing it from moving more than one slide at a time. The disk M. is provided with shallow notches m in which the free end of the spring N is projected by its own resiliency to act as a spring pawl to limit movement of the carrier I but permits adjustment thereof. In one direction oi. rotation of the carrier I the spring pawl N acts as a stop but in the other direction of rotation it permits movement but prevents drag by reason, of its engagement with the disk M.

In order to avoid exposure of portions of a receding picture and approaching one the following mechanism is employed :0 and 79 are two semicircular plates jointed pivotally at 0 and 79, each of said plates has a spur 0 p which when acted upon are capable of moving the said plates through an are sufficiently great to actually close and open the shutter. The means employed to actuate the two semicircular plates 0 and P constituting the flasher or shutter are two pins or studs Q and R mounted on a sliding bar or lever S. The sliding bar S is normally drawn down by the power of the spring T in order to close the flasher or shutter which position is shown in full lines in Fig. 6. The movement of the horizontal disk D, will cause the antifrictional wheel U mounted intermediately between the end of the sliding bar or lever S and the surface of the revolving disk D, and in frictional contact with both lever and disk in a rocking bracket V Fig. 5, to close and open the flasher or shutter in the course of one complete revolution it will do so twice giving the corresponding number of exposures as pre arranged. The sliding bar is guided and moved in its travel by the studs S and slots 8.

Claims:

1. The combination with a projecting lantern, of a rotary slide carrying member therefor, a driving cam disk having its axis at an angle to said Slide carrying member and provided with means for imparting a step by step movement to said slide carrying member, a shutter device, and a spring controlled actuating bar for said device operated by said cam disk, substantially as de scribed.

2. The combination with a projecting lantern, of a rotary slide carrying member therefor, a driving cam having its axis at an angle to the said slide carrying member and provided with means for imparting a step by step movement to the said slide carrying member, a shutter device adapted to be operated intermittently, a spring controlled reciprocating actuating bar for the said shutter device, and means carried by the said driving cam disk for actuating the said shutter device and reciprocating bar.

3. The combination with a projecting lantern, of a clockwork mechanism adapted to drive a rotary slide carrying member for the said lantern, a driving cam disk having its axis at an angle to said slide carrying member and provided with means for imparting a step by step movement to said slide carrying member, a shutter device adapted to be operated intermittently, a spring controlled reciprocating actuating bar for the said shutter device, means carried by said driving cam disk for actuating said shutter device and reciprocating bar, and means for arresting at suitable intervals the rotary movement of the slide carrying member.

In testimony whereof I affix my signature in presence of two witnesses.

JOE QUTGLEY. lVitnesses JOHN LIDDLE, JOHN TRAIN LIDDLE.

Gomea of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

